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Table 3

  13CO and HCN observations.

Transition Frequency Telescope Beam Offset Peak Ratio   12CO/  13CO
Size T mb Integrated All ETD CND SE CND NW
(GHz) (′′) (′′) (mK) (  K   km   s-1) (Jy   km   s-1)

  13CO

J = 1–0 110.201 SEST 47 0, 0 39 7.4 140 ± 28 9 ± 2 10 ± 2 10 ± 4 11 ± 4
–16, +12 34 7.5 142 ± 15
–32, +24 23 3.7 70 ± 11 23
–40, +28 19 2.7 51 ± 8
–48, +32 13 1.8 34 ± 5
+16, –12 36 6.5 123 ± 18
+32, –24 26 3.8 72 ± 11 23
+40, –32 19 3.1 59 ± 9
+48, 032 18 2.1 40 ± 6
J = 2–1 220.399 SEST 24 0, 0 46 7.8 160 ± 32 11 ± 1 13 ± 2 13 ± 1.5 11 ± 1.5
–16.4, +11.5 38 5.4 111 ± 17 12
–32.8, +23.0 54 7.4 152 ± 23 8
–41.0, +28.5 36 4.2 86 ± 13
+16.4, –11.5 52 8.2 168 ± 25 7.5
+32.8, –23.0 50 7.1 146 ± 22 8.5
+41.0, –28.5 48 7.0 144 ± 22
+49.2, –34.2 48 6.6 135 ± 20
J = 3–2 330.588 JCMT 15 0, 0 41 6.2 182 ± 36 14 ± 2 14 ± 2 17 ± 4 13 ± 2
APEX 18 0, 0 87 14 419 ± 84
–20.8, +12.0 41 6.3 189 ± 28
+20.8, –12.0 24 4.4 132 ± 20
J = 5–4 550.926 HIFI 45 average 1.2 0.7 244 ± 85 18 ± 6

HCN

J = 1–0 88.632 SEST 57 0, 0 0.026 1.60b
–16.4, +11.4 0.015 0.59b
–49.2, +34.2 <0.008 0.24
+16.4, –11.4 0.015 0.20b
+49.2, +34.2 <0.008 0.25

Notes.

(a)

Ratios determined by (partial) fitting   13CO profile to   12CO profile;

(b)

Profiles dominated by absorption; integrated values cover velocity ranges VLSR = 300–500   km   s-1 and VLSR = 600–800   km   s-1 only.

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